Centralize docs, align changelog and release process

Makefile

@@ -3,6 +3,7 @@ NAME := ocis
 IMPORT := github.com/owncloud/$(NAME)
 BIN := bin
 DIST := dist
+HUGO := hugo
 
 ifeq ($(OS), Windows_NT)
 	EXECUTABLE := $(NAME).exe
@@ -130,9 +131,24 @@ release-check:
 .PHONY: release-finish
 release-finish: release-copy release-check
 
+.PHONY: docs-copy
+docs-copy:
+	mkdir -p $(HUGO); \
+	mkdir -p $(HUGO)/content/; \
+	cd $(HUGO); \
+	git init; \
+	git remote rm origin; \
+	git remote add origin https://github.com/owncloud/owncloud.github.io; \
+	git fetch; \
+	git checkout origin/source -f; \
+	rsync --delete -ax ../docs/ content/$(NAME)
+
+.PHONY: docs-build
+docs-build:
+	cd $(HUGO); hugo
+
 .PHONY: docs
-docs:
-	cd docs; hugo
+docs: docs-copy docs-build
 
 .PHONY: watch
 watch: